Kinda in need of help and ideas about problems....

dabazied

New Member
Dec 14, 2007
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Ok. First off I would like to say hi to everyone and let ya know I am new to the whole mustang thing and this forum. Just bout the car about 3hrs ago lol.....

On to the good part(loaded with sarcasm lol)......

Bought an 87 mustang LX 4 banger today for a great price. Here is my issue.... To take off from a dead stop, I have to give it a good amount of gas(but not too much otherwise it just sounds like it is backfiring, struggling, VERY SLOW, and then stalls out) to go. I can't just give it the "normal" amount and I have to ease off the clutch very slowly so that way I can get the perfect amount of RPMs so it'll take off with out doing the stalling thing(whether it be too much or too little). Also, if I floor it it'll do the same thing I described if I give it too much gas when taking off from a dead stop. The same thing also happens when I shift at a normal shifting RPM(around 3k) and let it go too low on the rpms(under 2k). The guy I bought it from said the EGR valve was messed up(never heard of one of these lol) so I did some research on here, google, and some other mustang dedicated forums. I now pretty know what it is for, haven't really found out where it is/looks like, but will look tomorrow when it's not dark. The guy I bought it from also said he tried cleaning it out but that didn't work, but I'd rather try that and test for the vaccuum pressure myself....... Also, an fyi, the car was sitting for about 3 months before the previous owner had it so the fuel system and spark plugs/wires light dinged in my head.

My question is what do you guys, and gals, think it is/could be? Thanks for all the help in advance and I look forward to learning a lot.
 
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First thing you should do is a tune up, not because it's going to fix your problems but because you don't know when the last time it has been done. Also, it could fix your problems. Change your oil, oil filter, fuel filter (located right infront of the gas tank on the passenger side), plugs, wires, air filter, etc...

How does the car idle? Pop the hood with it running and listen for a vacuum leak.

Oh and one other thing you can do is go pick up some SeaFoam from NAPA. That stuff works GREAT. Use it before changing the oil because once you add it to your crankcase you won't want to keep that stuff in there for longer then 250 miles.
 
It idles low for what I'm used to in cars(i'm used to the imports @ between 800-1k), at around 600rpm. It takes a little press of the gas to start it sometimes as well. When it I was looking at it, it kept cutting off while idling but haven't tried to check a cold idle since I got home yet. It has been sitting for a couple of weeks though without being cranked.
I'm gonna do a tune up within the next week or 2 'cause I know it needs one, definitely the tell-tale sign is that it hasn't even been inspected n that ran out May 07 lol...... I LOVE sea foam, use it on all of my cars. But do you think that the egr valve thing would be a possible cause for these problems? From doing some reading tonight it looks like that may be a possibility but I was thinking tune-up stuff as well.
 
The EGR could, yes...but I'm gunna say that it's not (I've been wrong before though :p ). Your car should be idling a lot higher then that and you shouldn't have to hit the gas to get it going. My car idles at 1100 with the turbo motor and with the N/A 2.3 that was in there it was around 1000. I would probably say it's gunna be vacuum, maybe the idle air control module, or even the throttle position sensor. I'd just start with the basics though, you might get lucky and just find a broken or popped off vacuum line. Easy enough to find, just listen! :D

Without actually seeing it though, I couldn't diagnose it. It could even be something like a bad O2 sensor.

I know yours isn't a turbo engine but most of the sensors and the EGR are in the same place as this engine
http://www.turbotbird.com/FaqPage/Engine.jpg
 
If you can get your hands on a Chilton or Haynes manual, that would be an excellent start. It will show you what is what and basics on how to replace it. After you visually inspect things in the engine bay, I would run the codes on it. A repair guide will tell you how to do it. All you need is a voltmeter.